High-tension strain-insulator.



L. STEINBBRGER. A man mzsron sammsum'ro.

999,414. Patented Aug. 1, 1911.

/,`l L/////////////////////////.//////,/./%///% W1: s Y f,

il "i To all vwhom it muy concern:

.or of porcelain,

certain internatparts of the insulator are UNITED snurushrrtfrnnrOFFICE.A

HIGH-Transmit sTnA'INJNsULAToR.

Specification of Letters Patent. Patented Aug, 1 1 911 filed lhbruary18, 191D. Serial No. 544,534.

' Application subjected. XII. To provide strain plates or members madeof a rigid or a yielding material, as desired. XIII. To provide theinsulators with improved means for con meeting them together. XIV. Toprovide the insulator with a partition for pose of sustainingl thestress when `thefiinsu lutor is under mechanical tension. XV. To prmiflethe insulator with a portion to ibo" subjected to compression when it isunder mechanical tension, Y l-lefexencc is to be had to the accompany.-ing' drawings forming a part of this speci- Firutun in which similarcharacters of ref erenrc indicate corresponding Aparte in all thefigures.

Figure l is a iertical section on the line 3--3' of Fig. 3. lookingT inthe direction of the arrow and showing one of the units with adetachable eye whereby it. may be suspended; Fig. 2 a section on theline IM-l of Fig. 3, looking in the direction of the arrow; Fig. 3 is ahorizontal'section-on the line 5-5 ofsFig. 1, looking in the directionof the arrow; Fig. 4 is a fragmentary section on the line 6-6 of Fig, 1,looking in the direction of the arrow; 'and Fig. 5 is a sectional Viewof the body portion of the insulator provided with its hood, the strainmembers not being yet connected with it.

The body portion ofthe insulator is shown at18, and is provided with ahood 9 and with two recesses 10 and l1. The body portion 8 is furtherprovided with a paii of holes 12 and another pai holes being straightand extending through to the recesses.

At 14, are two'metallic plates provided respectively with narrow middleportions 141,15*. These plates are disposed i-n the bottoms of the resective .recesses 10,111, which are separat by a partition 16, integralwith the body portion 8. The'parlle it. known th a ,ritizen of the`United den-t ot.' the city ot New York, borough oi' Brooklyn, in thecounty' of Kings and State of New York,` have invented a new andImproved High-l`ension Straindnsulator,V

a full, clear, and

ut I, Louis Sfrrnnnouomi,

States, and a resi- My invention relates to high tension straininsulators for general use, where currents of high potential areemployed, the being pecially well adapted for use in Wireless telegraphyand.telephony, my special pui pose being to provide a number of novelconstructional features in order to improve the general etliciency ofthe insulator, and l to enable me to make it of an iifisulating;rmaterial formed under pressure or molded, glass or such like material,and to employ tension members of a rigid or of a flexible character. asmay he desired. More particularly stated, my improved high tensionstrain insulator is so constructed and arranged as to fulfil thefollowing purposes, towit: I. To enable the insulator| to be susended byaid of tension members which may e flexible or inflexible, asdesired.II. To protect from the Weather a portion of the ody part of theinsulator. III. To proriide the body part of the insulator withprotecting hoods. IV. To render the tension members more readilydetachable. V. To provide the insulator with recesses to be used forinserting and taking out the tension membersand to lill said recesseswhen desired with an insulating material separate from that of the bodyportion of the insulator. VI. To render the insulator 'readilyattachable for use with its .general axis of suspension either vertical,horizont-al, or at any desired angle. VII. To render the terminalsreadily interchangea le in order to prolong the life of the insulator asa whole. VIII. To provide tition is provided with bevels 17, mergingcovers for the recesses and for the filling into the holes 12, and theholes through the materials used. IX.- To enable the covers plate 15 areslightly rounded, as indicated to act as braces for the tension members.in Fig. 3, to match the bevels. l X. To provide the insulator body, asfar as At. 18 are tension. members integral with practicable, with'straight holes extendingr each other and together forming nsubstanyllirolntgh it and merging into the recesses, in tially U-shapedmember. The ends 15) of order to facilitatethe connection of variousthis U-shaped member are threaded, as will tension members. XI. ToJdistribute to the beunderstood from Fig. 3. best' 4invantage themechanical strains to `which the bearing plates or members and ichreceivethe threaded ends with holes, w

nuts 21 aretted upon the 1 9. Revoluble the'pur- At 20 is a cap made ofmetal and providedthreaded ends 19 and engage Ithe cap 20. This cap isprovided with a centrally-dis posed threaded boss 21% An eye 22 is pro-lvided with a threaded' socket, which lits upon the boss 21* throughwhich connection may be made to a supporting member, conductor, oranother insulators Fillin gs 23 and 24 of insulating material, separatefrom the body portion 8, are disposed within the openings 11, 10, so asto completely fill the same.

At 25 is a cover plate for the recess 10. Engaging this cover plate is aplate 26, having a threaded boss 27 inte ral with it through whichconnection may e made to a supporting member, conductor, or anotherinsulator. Two bolts 28', serving as tension members, and provided withheads 29, eX- tend entirely through the holes 13 and also throughthebearing lates 14, 15. These bolts are provided with threaded ortions30, which are engaged by nuts 31. y turning the nuts21 and 31, anyamount of initial stressmay be placed upon the tension members 18, 28,and also upon the partition 16.

In assembling the parts, the bearing plates 14, 15 are placed inosition, and the tension members extended t rough the holes 12, 13` Thefillings 23, 24 are placed in position and the cal 20 is brought into enagement with the li 'ng 23, the cover p ate 25 being fitted against thefilling-24. The nuts 21,

31 are next applied, so t at the tension members and parts immediatelyaffected thereby are subjected to 'the desired amount of initial strain.This completes the insulator, as ordinarily used, it being now ready foruse in any relation where a. high tension insulator may be em loyed.

When these insu ators are made of porcelain, glass or such likematerial, it may be desirable to use a rope or other flexible tens sionmember or a partly flexible and partly infiexible tension member insteadof the in- Hexible tension members 18 and28. To einploy the flexibletension member. such as a rope, it is merely threaded through the holes-12 and 13. When desired. bearing- .lates or members made of a yieldingmateria maybe employed. Furthermore, it is of course immaterial whethertheA U'-shaped members be in one ieee or whether the legs of theU-shapeci) necting portions.

I do not limit myself to the precise shape of any part above describedand herein shown, nor in all cases to the precise :ir-

rangement of the parts relatively to cach other, nor to employing inevery instance te ion members made of unyielding mate- V riale. Neitherdo I limit myself to the use of any particular material. I prefer,however, to use the insulating material known in commerce as electrosemembers be separate from the con-` `sion members havin Having thusdescribed Imy invention, I claim as new and desire to secure by LettersPatent:

1. An insulator comprising a body ortion` having a slot-like openingexten ing thereinto from each end and having a median partition definingthe inner ends of said o enings, the planes of the lengths of said s otscrossing eachother, and therev being an aperture extendin through thepartition at each end of each s ot, the apertures that open from oneslot passing through the material of the insulator on opposite sides ofthe other slot, substantial y U-shaped tension members having theirconnecting portions respectively lying in the bottoms of said slots'andtheir le extending through the openin from sai slots res ectively andout beyon the ends of the insu ator, and means connecting together theouter ends of the legs of each U-shaped member.

2. An insulator comprising a body portion having a slot-like openingextending thereinto from each end and having a median partition definingthe inner ends of said openings, the planes of the lengths of said slotscrossing each other, and there being an aperture extending through thepartition at each end of each slot, the apertures that o'pen from oneslot passing through the material of the insulator on opposite sides ofthe otherslot, substantially U-shaped tension members havin theirconnecting portions respectively lying in Vthe bottoms of said slotsand-their legs extending throu h the openings from said slots respectivey and out beyond the ends of the insulator, means connecting togetherthe outer ends of the 4legs of cach U-shaped member, and a filling ofinsulating material in cach slot above the connecting portion that liesin the bottom thereof.

3. An insulator comprising a `body ortion having a slot-like openingexten ing thcreinto from each end and having a median partition definingthe inner ends of said openings. the planes of the lengths of said slotscrossing each other, and there being an a erture extending strai ht awathrough e partition at each end of eae slot, the apertures that openfrom one` slot passing straight away through the material of theinsulator at opposite sides of the other slot, and substantiallyU-shaped tentheir connecting portions rcspectively lying in the bottomsl'of said slots and having straight legs extending throu h the openingsfrom said slots respective y and out beyond the ends of the.. insulator,and means connecting together the outer ends of the-legs of eachl-shaped member.

4.- An insulator comprising a body prtion havin a slot-like openingexten ing thereinto rom each end and having n meiio izo

diam partition defining the inner ends of said openings, the planes ofthe lengths of said slots crossing each other, and there bein'g anaperture extending through the par1` titlon at each end of each slot,the apertures that open from one slot passing through the material ofthe insulator on opposite sides of the other slot, substantiallyU-shaped tension members having their connecting portions respectivelylylng in the bottoms of said slots and their legs extending through theopenings from said slots respectively and out beyond the ends of theinsulator, and means connecting together the outer ends of the legs ofeach U-shaped member, said means engaging the ends of the insulatorrespectively.

5. An insulator comprising a body portion having a main openin extendingthereinto from each end and 2having a median partition defining theinner ends of said openings, there being a pair of apertures extendingthrough the partition from each of said first named main openings, theplane of one pair of apertures intersecting that of the other pair, theapertures that extend from the bottom of one main opening passingthrough the material of the insulator at opposite sides of the othermain openings, and substantially U shaped tension members \having theirconnecting portions respectively lying in the bottoms of said mainopenings and their legs extending through the apertures from said mainopenings rcspectively and out beyond the ends of the insula'vr, andmeans connecting together the ou r ends ofthe legs of each U-sbapedwithin said body portion but insulated from `50 l each other byintervening portions of the insulator body material, and means for connecting together the extending free ends of the legs of each tensionmember.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS STEINBERGER, Witnesses: iVAL'roN HAluusoN,

PHiLiP D. RoLLHAUs.

